Electronic cigarette



FIG. 1 is a front elevational view of an electronic cigarette;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a first perspective view thereof; and,

FIG. 8 is a second perspective view thereof.

The broken lines in the drawings depict parts of the electronic cigarette that form no part of the claimed design. 

CLAIM The ornamental design for an electronic cigarette, as shown and described. 